Wavelet-based method for signal acquisition in GNSS receivers

A novel method is proposed to acquire the signal parameters for Global Navigation Satellite System (GNSS). This method utilizes discrete wavelet transform (DWT) to divide the wavelet space, indicating that the wavelet transform is better in de-correlation ability and signal acquisition performance. Simulations and experiments demonstrate that the proposed method can improve performance in shorten acquisition time and lower computation complexity as opposed to traditional fast Fourier transform (FFT) based methods.